Gluing and dowel-driving machine.



J. R. PRANTZ. GLUING AND DOWEL DRIVING MACHINE. APPLIGATION FILED PEB.19,1913.

1,080,274. I Patented Dec.2, 1913.

6 SHEETSr-SHEBT 1.

I v v I Int/(726 9? W COLUMBIA PLANOGRAPH 60.. WASHINGTON. n. c

J. R. FRANTZ. GLUING AND DOWEL'DRIVING MACHINE. APPLICATION FILED IEILIS, 1913.

1,080,274, Patented Dec. 2, 1913.

5 SHEETS-SHEET 2.

coLuMBu PLANDGRAPH :9, WASHINGTON. n1.

J. R. FRANTZ.

GLU'ING AND DOWEL DRIVING MACHINE. APPLICATION FILED FEB.19,1913.

1,080,274. Patented Dec. 2,1913.

6 SHEETS-SHEET 3 J. R. FRANTZ. GLUING AND DOWEL DRIVING MACHINE.

APPLICATION FILED FEB.19,1913.

1,080,274. Patented Dec. 2, 1913.

6 SHEETS-SHEET 4.

UNITED STATES PATENT @FFIQE.

JOHN R. FIR-ANTZ, OF OSHKOSH, WISCONSIN, ASSIGNOR TO E. B. HAYES MACHINE COMPANY, OF OSHKOSI-I, WISCONSIN, A CORPORATION OF WISCONSIN.

GLUING AND DOWEL-DRIVING MACHINE.

Specification of Letters Patent.

PatentedDec. 2, 1913.

Application filed February 19, 1913. Serial No. 749,413.

kosh, in the county of Winnebago and State of WVisconsin, have invented certain new and useful Improvements in Gluing and Dowel- Driving Machines, of which the following 1s a specification.

My invention relates to a machine capable of both gluing dowel holes in rails, stiles or other stock and driving the dowels into the dowel holes and the object of my invention is to produce a simple, eflicient and reliable machine of this character.

Speaking in general terms, my machine comprises mechanism for introducing glue into the dowel holes, preferably by means of a pump mechanism for automatically moving the stock from the plane occupied by the gluing mechanism to a difierent plane occupied by dowel-driving mechanism which automatically inserts and drives the dowels into the glued holes of the stock.

My invention also relates to novel and eflicient details of construction and mode of operation as well as adjustments of parts for the reliable eflicient and automatic operation of the machine.

In the drawings, Figure 1 is a side elevation of my machine; Fig. 2 a plan view thereof; Fig. 3 a section on the line 33 of Fig. 2; Fig. 4 an end elevation of the machine and Figs. 5, 6 and 7 detail sectional views on section lines corresponding to said figures respectively in Fig. 3.

Referring to the particular embodiment of my invention as shown in the drawings, I employ any suitable supporting frame 1 upon which all of the working parts of the machine are mounted and supported. Within the interior of this frame and below the top plane thereof a glue receptacle or vat 2 is suitably supported, Figs. 1 and 3. At one end of the machine there is mounted in adjustable manner a bracket or table 3, the same being arranged to slide vertically in the vertical guides 4 at the end of the machine and adjusted by means of the screw 5 operated by the hand-wheel 6, as clearly shown in Figs. 1, 3 and 4. At the outer side of this frame 3 a stop 7 is mounted to slide upon the two parallel rods 8 and adjustable by means of the horizontal adjusting screws 9 which are screw-threaded into an angular obstruction to the latter.

nut 9 capable of a vertical adjustment in opening 1 in the main frame in the manner shown in Fig. 3 thereby accommodating vertical adjustment of frame 3. To one end of the frame 3 is secured a laterally-extending table 10 having a longitudinal guideway 10 adapted to receive a bar or wooden strip 11 on which is acljustably mounted a guide 12.

This bar or strip 11 carries near its other end a similar but opposed guide 13. By loosening the set screws 14 and 15 respectively of these guides the same may be adjusted to any desired position upon the strip 11 in order that the dowel holes in the end of the rail or other stock operated upon will register properly and accurately with the gluing mechanism of the dowel-driving mechanism hereinafter described.

Referring first to the gluing mechanism, a carriage 16 formed as an arch plate is adapted to reciprocate on the top of the main frame in suitable guides formed by the gibs 17 Fig. 2, and this carriage is reciprocated positively in one direction by suitable driving connections against the tension of the spring 18 coiled around the inner end of a rod 19 which is secured to and projects laterally of a slide plate 20 gibbed into the carriage. One end of this spring bears against adjustable nuts 19 and the other against one side of the dowel hopper herein after described, with the result that such spring returns the carriage to its normal position after being permitted to do so by the driving connections. The rod 19 slides freely through a lug 16 on the carriage and through a coiled spring 21 interposed between the lug and the plate 20, thereby providing a yielding driving connection between the carriage and the plate to prevent breakage of the glue fingers in case of any The outer end of the plate 20 is formed as a bracket 22 which carries a cam roller 23 cooperating with a earn 2% on the main drive shaft 25 driven by the pulleys 26. It results from this described construction that the rotation of the cam24t will force the carriage 16 to the right in Fig. 2 against the tension of the spring 18 which will automatically return such carriage to its normal position.

To the front end of the carriage 16 are secured brackets 27 which in practice are castings cored out at their inner ends to in number, although any greater or less number of these fingers may be employed. I prefer to provide each glue finger with a valve or stop cock 30 for shutting ofi any one or more of the fingers from action so far as the introduction of glue is concerned. To one of these elbows 27 there is connected a pump proper which depends into the glue vat with its suction communicating there-' with. As shown in Fig. 1, this pump comprises a casing 31 having a suction opening indicated at 32 and normally closed by a ball 33. A pump plunger 34 upon its upward movement sucks the glue within the casing and upon its downward stroke forces such glue through the side chamber or extension 35 and through the discharge port 36 which is governed by the ball 37. This discharge communicates by means of the pipe 38 with the manifold 28, such pipe being secured into one of the elbows 27 and acting to support the pump mechanism within the vat. To the other elbow 27 there is secured a relief mechanism, Fig. 3, which consists of a casing 39 also depending into the vat and a relief valve 40 operating therein, this casing being similar to the pump casing in general structure and being connected with the manifold or rather with its elbow 2.7 by means of the pipe 41. In case of any excess pressure above a predetermined amount the glue will travel downwardly in the pipe 41 and raise the valve 40 from its seat thereby relieving the glue from the manifold back into the vat.

In operation the carriage 16 is reciprocated forwardly with the result that the glue fingers are inserted into the dowel holes of the rail or other stock and at the proper time the pump is operated to force glue from the fingers into said holes. For so operating the pump, suitable mechanism may be employed, the same as herein shown comprising a rod 12 operatively connected with the upper end of the stem of the piston or plunger 34 and carried at the outer end of a rocking lever 43 pivoted to the main frame at 44 and carrying near one end a cam roller 45 which coiiperates with a cam 46 on the main drive shaft. This end of the lever 43 is suitably weighted as by means of the weight 47 so that such lever is restored to normal position by gravity, the cam working against said weight in the pumping operation.

I do not herein claim the described pumping mechanism and its relief valve 7767' 86 as the same is the joint invention of Mr. Kuebler and myself and the same is described in an application heretofore filed by us on February 17, 1913, Serial No. 748,933.

Referring next to the dowel-driving mechanism, I mount upon the main frame a dowel hopper 48 which is preferably of the construction herein illustrated, more particularly in Figs. 4, 5 and 6. This hopper is provided at its bottom with a series of three partitions, the outermost ones 49 of which are of the same peculiar construction while the middle one 50 is a plain partition. The upper ends 49 of these two special partitions 49 are separate from the rest of their partitions and secured to agitator rods 51. The lower ends of these agitator rods are secured to a horizontal plate 52 beneath which extend a pair of agitator fingers 53 mounted upon the transverse horizontal rock shaft 54, Fig. 6. This rock shafthas a rock arm 55 pivotally connected to a link or arm 56 which in turn is pivotally connected to a substantially vertical rock arm 57 pivoted at its lower end at 58 upon the main frame, Fig. 1. For rocking this arm or lever 57, I employ a cam roller 59 cooperating with the cam 60 upon the main drive shaft 61 which is driven by the pulley 62. By these means the upper ends 49 of the outermost partitions are agitated in order to keep the dowel pins straight. The wall of the hopper are supported upon the base 48 which has a series of four grooves 48 registering with the channels between the partitions. Along these grooves pass the series of four dowel drivers or plungers 63 which fit and are secured by means of set screws 64 in holes in the front end of a second sliding carriage 65 adapted to reciprocate on the top of the main frame 1 in guideways formed by the parallel gibs 66, Fig. 7. This carriage 65 is reciprocated positively in both directions by means of cams properly timed in their operation with respect to the other driving connections hereinbefore described. As shown this carriage is provided with a bracket 67, Fig. 3, which is adjustably secured thereto by means of the bolt 68, the proper accuracy of adjustment being obtained by the adjusting screw 69 The depending end of this bracket 67 carries two laterally-extending cam rollers 69 and 70, the former of which cotiperates with the cam 71 and the latter of which cooperates with the cam 72. t While these cams are thus spoken of as separate, yet in practice they consti-tue a single casting which is secured upon the drive shaft 25. The cam 71 contacts the roll 69 and forces the carriage 65 together with its dowel drivers forwardly to the position shown in Fig. 3 which shows the position of said parts when the dowels are completely driven. After the high point of the cam 71 has cleared the roller 69 the marginal flange constituting the cam 72 will take hold of the roller 70 and withdraw the bracket 67 and its carriage to normal position, that is to the left in Fig. 8.

By preference the forward end of the hopper base 48 adjacent the path of the rail or stock is hingedly mounted, the same normally lying in horizontal position as shown in Figs. 3, 4 and 5, so as to act as a guide for the dowels but arranged to move or yield upwardly when contacted by the glue fingers or when drawn upwardly by the operator when it is desired to inspect such fingers. As shown more particularly in Figs. 4: and 5, such movable end of the hopper base is provided at two opposite ends with upwardly extending lugs or brackets 48 which are pivotally connected to the end walls of the hopper by means of the bolts 48 The gluing mechanism and the doweldriving mechanism are on two difierent but parallel planes or levels, the gluing mechanism operating in the lower plane. The rail is first submitted to the action of the gluing mechanism and then raised and submitted to the action of the dowel-driving mechanism. I prefer to provide for the automatic raising or lifting of the rail from one plane to the other and to this end I employ a pivoted lifter bar 73 in the gen eral form of a bail and located in front of the glue fingers and underneath the rail when in position. The parallel ends of this bail are pivoted on a horizontal axis at 7A and such bail is rocked by means of the extension or arm 75 connected therewith and pivoted to the front end of the long operating bar 76 whose forward end is slotted at 76 to embrace the drive shaft 25 so as to slide and be supported thereupon. The extreme left-hand end (Fig. 1) of this bar is provided with a cam roller 77 which cooperates with a cam 7 8 on the drive shaft 25 with the result that the bar is reciprocated in proper time with the other movements of the machine to rock the lifter bar 73. By these means the rail after being operated upon by the gluing mechanism is automatically elevated with accuracy to the next higher level or plane to be operated upon by the dowel driving mechanism.

As stated the pulley 62 is the power pulley and the power is communicated from its drive shaft 61 through the friction wheel 79 to the other pulley 26 hereinbefore referred to. This friction wheel is controlled by the treadle 8O pivoted on the main frame.

It will be understood that, in so far as my invention more broadly is concerned, it is not necessary that the glue applying from one plane to the other.'

2. A combined gluer and dowel driver operating in different but parallel horizontal planes, and an oscillating bar for moving the stock from one plane to the other.

3. The combination of gluing mechanism, dowel driving mechanism superimposed thereupon, said mechanisms operating in different but parallel horizontal planes, and means for moving the stock from one plane to the other.

4. The combination of gluing mechanism including a reciprocating glue finger adapted to be inserted into a dowel hole in the stock, and means for supplying glue to the finger, dowel driving mechanism superimposed upon the gluing mechanism and including a reciprocating dowel driver operating in a plane parallel with the plane of movement of the glue finger, and means for moving the stock from one plane to the other.

5. The combination of gluing mechanism including a reciprocating glue finger adapted to be inserted into a dowel hole in the stock, and having a glue passage through it, and a pump commip icating with the finger for pumping glue therethrough and into the dowel hole, dowel driving mechanism superimposed upon the gluing mechanism and including a reciprocating dowel driver operating in a plane parallel with the plane of movement of the glue finger, and means for moving the stock from one plane to the other.

6. The combination of gluing mechanism including a reciprocating glue finger adapted to be inserted into a dowel hole in the stock, and means for supplying glue to the finger, dowel driving mechanism superimposed upon the gluing mechanism and including a reciprocating dowel driver operating in a plane parallel with the plane of movement of the glue finger, and a dowel guide normally in the path of the finger but arranged to yield to the movement of the latter.

7 The combination of gluing mechanism including a reciprocating glue finger adapted to be inserted into a dowel hole in the stock, and means for supplying glue to the finger, dowel driving mechanism super-imposed upon the gluing mechanism and including a reciprocating dowel driver operating in a plane parallel with the plane of movement of the glue finger, and a hingedly mounted guide normally in the path of the finger but arranged to yield to the movement of the latter.

8. The combination of gluing mechanism including a reciprocating glue finger adapted to be inserted into a dowel hole in the stock, and means for supplying glue to the finger, dowel driving mechanism superimposed upon the gluing mechanism and including a reciprocating dowel driver operating in a plane parallel with the plane of movement of the glue finger, a dowel hopper through which the driver moves, and a dowel guide pivoted at the front of the hopper and arranged to yield when contacted by the finger in its travel.

9. A combined gluer and dowel driver operating in different but parallel horizontal planes, an oscillating bar in the form of a bail for moving the stock from one plane to the other, an arm connected therewith, a reciprocating bar connected with the arm, and means for operating the latter bar.

10. The combination, with a main frame, of gluing mechanism and dowel driving mechanism mounted thereon and operating in different but parallel horizontal planes, a work table vertically adjustable on the frame, and means thereon for moving the stock from one plane to the other.

11. The combination, with a main frame, of gluing mechanism and dowel driving mechanism mounted thereon and operating in differentbut parallel horizontal planes, a work table vertically adjustable on the frame, and a bar mounted to oscillate thereon for moving the stock from one plane to the other.

12. The combination, with a main frame, of gluing mechanism and dowel driving mechanism mounted thereon and operating in different but parallel horizontal planes, a work table vertically adjustable on the frame, means thereon for moving the stock from one plane to the other, and an adjustable stop on the table for the end or side of the stock opposed to the finger and driver.

1.3. The combination, with a main frame, of gluing mechanism and dowel driving mechanism mounted thereon and operating in difierent but parallel horizontal planes, a work table vertically adjustable on the frame, means thereon for moving the stock from one plane to the other, a stop bracket mounted to reciprocate on the table toward and away from the finger and driver, an adjusting screw carried by the bracket, and a nut which is arranged in such table and'into which the screw screws.

14:. The combination, with a main frame, of gluing mechanism and dowel driving mechanism mounted thereon and operating in different but parallel horizontal planes, a work table vertically adjustable on the frame, means thereon for moving the stock from one plane to the other, an adjustable stop on the table movable toward and away from the finger and driver, and adjust-able end guides mounted on the table.

15. The combination, with a main frame, of gluing mechanism and dowel driving mechanism mounted thereon and operating in different but parallel horizontal planes, a work table vertically adjustable on the frame, means thereon for moving the stock from one plane to the other, an adjustable stop on the table movable toward and away from the finger and driver, a bar on the table, and end guides adjustable on the bar.

16. The combination, with a frame of gluing mechanism and dowel driving mecha nism mounted thereon, one of said mechanisms being superimposed upon the other and the same operating upon the stock in different but parallel horizontal planes.

JOHN R. FRANTZ.

' lVitnesses:

J. F. HAYES, Enw. RHYNER.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents,

Washington, D. C. 

